PDN SAE GW selection method, system and device in SAE
A service system and parameter selection technology, applied in the field of communication, can solve problems such as failure to detect whether the PDN SAEGW status is normal, failure, and no signaling interaction
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Embodiment 1
[0059] Embodiment 1: In this embodiment, SAE GW A is a device that integrates Serving SAE GW and PDN SAEGW. MME selects SAE GW A as Serving SAE GW for bearer establishment, and the PDN SAE GW entity of SAE GWA itself can also support The bearer uses the APN, so SAEGW A chooses itself as the PDN SAE GW to establish the bearer. see Figure 5 shown, including the following steps:
[0060] 201. In the process of establishing the bearer, the MME selects the SAE GWA as the Serving SAEGW for establishing the bearer, and sends it a bearer establishment request message, which only carries the APN.
[0061] 202. After receiving the bearer establishment request message sent by the MME, SAE GW A finds that the message only carries the APN, and then further judges that it has the function of PDN SAE GW, and its own PDN SAE GW can handle the APN, so directly Select its own PDN SAE GW to establish a bearer, and respond to the MME with a bearer establishment response message.
Embodiment 2
[0062] Embodiment 2: In this embodiment, SAE GW A is a device that integrates Serving SAE GW and PDN SAE GW, and SAE GW B is also a device that integrates Serving SAE GW and PDN SAE GW. MME selects SAE GW A as Establish the Serving SAE GW for the bearer, but the PDN SAE GW entity of SAEGW A itself cannot support the APN used by the bearer, so the SAE GWA obtains the list of available PDN SAE GW control plane IP addresses according to the analysis APN, and selects the SAE from it according to the policy GW B serves as the PDN SAE GW that establishes the bearer. see Figure 6 shown, including the following steps:
[0063] 301. In the bearer establishment process, the MME selects SAE GW A as the Serving SAE GW, and sends a bearer establishment request message to it, and the message carries an APN.
[0064]302. After receiving the Bearer Establishment Request message sent by the MME, SAE GW A finds that the message only carries the APN, and further judges that although it has th...
Embodiment 3
[0067] Embodiment 3: In this embodiment, Serving SAE GW A is a single Serving SAE GW entity, and PDN SAE GW B is a single PDN SAE GW entity. The MME selects the Serving SAE GWA as the serving SAE GW to establish the bearer. Since the Serving SAE GWA itself does not support the function of the PDN SAE GW, the Serving SAE GW A analyzes the APN to obtain the list of available PDN SAE GW control plane IP addresses, and selects the PDN from it. SAE GW B establishes a bearer. see Figure 7 shown, including the following steps:
[0068] 401. In the bearer establishment process, the MME selects the Serving SAE GW A as the Serving SAEGW, and sends a bearer establishment request message to it, and the message carries an APN.
[0069] 402. After receiving the bearer establishment request message sent by the MME, Serving SAE GW A finds that the message only carries the APN, then further judges that it does not support the PDN SAE GW function, and then performs DNS analysis on the APN to...
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